Nut-lock.



' PATENTED DEC. 10, 1907. I A. H. READEU I NUT LOOK.

APPLICATION FILED AUG. 27, 1907.

ARTHUR H. READE, OF NEW YORK, N. Y.

nor-Lock.

Specification of Letters Patent. Application filed August 27.1907. Serial No. 390.330.

Patented Dec. 10, 1907.

To all it may concern:

' Be it known that I, ARTHUR H. READE, a

' subject of the King of England, and a resia released position.

dent of New York, county and State of New York, have invented certain new and useful Improvements in Nut-Locks, of which the following is a full, clear, and exact description.

This invention relates more particularly to a nut having a movable locking member.

The primary object of the invention is to provide a simple and efficient device in which the nut has a threaded block or member slidingly held within a slotted portion of the nut and which is adapted to be forced into engagement with the threads of a bolt to. bind and rigidly hold the nut in a locked position as the nut is forced along the threads of the bolt to engage the surface of the means to be fastened.

A further object of the invention is to provide a nut which is inexpensive to manufacture, and in which the locking member will conform to the shape of the nut so that the latter will not be altered in appearance.

The invention will be hereinafter more particularly described with reference to the accompanying drawings, which form a part of this specification, and will then be pointed out in the claims at the end of the description.

In the drawings, Fi ure 1 is a sectional view of the nut in a loci is a detail sectional view,'s1milar to Fig. 1, exceptthat the nut has its locking member in Fig. 3 is a sectional view, artly in elevation, taken on the line III-I I I of Fig. 2; and Fig. 4 represents a plan and an edge. view respectively of the looking or clamping. member of the nut.

The bolt 10 may be of any suitable construction and has its .body ortion 11 passed through the parts 12 to be eld, and has the usual threaded end 13. On the'end 13 is a nut 14, either square, hexagonal, or ofany suitable form, and which has the usual thre aded opening 15 to engagethe threads of the bolt in the usual way..

To look the-nut on'the bolt, the nut is provided with a slot 16 substantially midway'of its thickness, and which extends from the periphery thereof across the nut to substantially the depth of the threads. This slot 16 extends transversely ofthe opening 15 and has a part 17 pirojectinginward so as to remove part of ed position. Fig. 2'

e threads of the nut thereby making the slot substantially T's haped. "In

this slot is adapted to move a'locking block or member18 which has a straight part 19, the latter being threaded, as at 29, on its inner surface so as to form a contmuation of the threads 15. of the nut. ,This looking or clamping block or member 18 has its body formed to the shape of the nut so thatwhen,

in position, the nut will present the same appearance as the usual nut, and said locking member has an aperture 21 therein which is adapted to be brought into alinement with an aperture 22 in the nut when in locked-position, the said aperture extending a part of the thickness of the nut, or if desired it may extend entirely therethrough. A pin or device 23 having a wedge-shaped part. 24, is adapted to fit into the a erture 22 of the nut and to have a part t ereoi' enter the opening or aperture 21 of the block 18. As will be seen, when the nut 14 is screwed home, the device 23 will engage the surface of the parts to be clamped by the bolt and nut and will force the device 24 inward, and by reason of the wedge-shaped part 24 of the device 23, the threaded block will be forced into engagement with the threads of the bolt so as to positively lock the nut to the bolt, the nutbeing released by turning the same with sufiieient force to slightly release the lockingmemben, I

-From the foregoing it will be seen that simple and efficient means is provided -.whereby a nut may be quickly and effectively locked'on a bolt, and that said device maybe em loyed in connection with the usual form ofnut without altering its general appearance.

'Having thus described my invention, I claim as new and desire to secure by Letters Patent 1. The combination with a belt, of a nut having a threaded opening fitting said bolt, a

' slot extending across the nut transversely of the threaded opening so as to remove a part of the threads in said opening and an aperture extending transversely of the slot, a

locking member "slidingly held in the slot in the nut and having a threaded inner surface corres onding to the threads ofthenut and provi ed with an aperture therethrough adapted to be forced into alinement with said aperture in the nut, and a device having a wedge-shaped portion adapted to engage the. lockmg member and force the same inward so as ,to remove apart of the threads 111 said opening and "an aperture extending trans: versely of the slot parallel with the threaded 0 ening, a locking member slidingly held in t e slot in the nut and having a threaded in- :Iiersurface corresponding to the threads of the nutand provided with an aperture adapted,to be forced into alinement with said aper- "tu rein the nut, and a device entering the apertures and adapted to engage the locking member rand force the same inward into clamping position 3. A device of the character described, comprising a nuthavin a threaded opening and. provided a s 0t extending across the nut substantially vmidway of its thickness and transversely of the threaded opening so as to remove a part of the thread in said opening and an aperture extending transversely of the slot, a substantially T-shaped locking block slidingly held in the slot in the nut and having a threaded inner surface cor res ending to the threads of the nut and provi ed with an aperture therethrough adapted'to be forced into alinement with said a or ture in the nut, and a pin having a we geshaped portion entering the apertures of the block and nut and adapted to engage the locking block and force the same inward into clamping position.

This specification signed and witnessed this 24th day of August A. D. 1907.

ARTHUR H. READE Witnesses:

'M. TURNER,-'

L. LUNDIN. 

